Handheld navigation device



FIG. 1 is a front perspective view of a handheld navigation device according to the present invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side view thereof, with the left side being a mirror image; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a handheld navigation device, as shown and described. 